Quarter	US dollars
1986-09-30	110013
1986-12-31	109087
1987-03-31	114913
1987-06-30	122604
1987-09-30	137999
1987-12-31	141662
1988-03-31	127041
1988-06-30	130573
1988-09-30	130422
1988-12-31	129217
1989-03-31	132036
1989-06-30	122046
1989-09-30	129187
1989-12-31	129387
1990-03-31	128518
1990-06-30	133055
1990-09-30	140163
1990-12-31	150838
1991-03-31	136847
1991-06-30	131967
1991-09-30	138618
1991-12-31	139937
1992-03-31	139994
1992-06-30	144094
1992-09-30	153303
1992-12-31	151528
1993-03-31	145684
1993-06-30	150217
1993-09-30	144054
1993-12-31	158330
1994-03-31	169916
1994-06-30	178580
1994-09-30	181664
1994-12-31	189959
1995-03-31	182504
1995-06-30	175576
1995-09-30	177301
1995-12-31	194356
1996-03-31	211233
1996-06-30	222667
1996-09-30	234611
1996-12-31	243352
1997-03-31	253893
1997-06-30	244189
1997-09-30	274690
1997-12-31	323706
1998-03-31	328433
1998-06-30	348787
1998-09-30	370510
1998-12-31	323153
1999-03-31	333040
1999-06-30	351330
1999-09-30	348892
1999-12-31	335762
2000-03-31	374783
2000-06-30	394641
2000-09-30	399621
2000-12-31	404682
2001-03-31	453935
2001-06-30	431849
2001-09-30	430046
2001-12-31	477061
2002-03-31	434160
2002-06-30	467991
2002-09-30	467145
2002-12-31	482502
2003-03-31	514648
2003-06-30	542591
2003-09-30	560632
2003-12-31	563883
2004-03-31	650556
2004-06-30	612912
2004-09-30	682458
2004-12-31	725866
2005-03-31	809065
2005-06-30	845450
2005-09-30	891991
2005-12-31	889546
2006-03-31	1034635
2006-06-30	1025999
2006-09-30	1135486
2006-12-31	1155692
2007-03-31	1339763
2007-06-30	1382285
2007-09-30	1444206
2007-12-31	1402574
2008-03-31	1477482
2008-06-30	1247550
2008-09-30	1327758
2008-12-31	1142056
2009-03-31	1137406
2009-06-30	1028738
2009-09-30	1074371
2009-12-31	1074762
2010-03-31	1105428
2010-06-30	1073389
2010-09-30	1161248
2010-12-31	1173091
2011-03-31	1288927
2011-06-30	1275561
2011-09-30	1445495
2011-12-31	1362779
2012-03-31	1329472
2012-06-30	1180687
2012-09-30	1214085
2012-12-31	1182561
2013-03-31	1121831
2013-06-30	1186842
2013-09-30	1113614
2013-12-31	1097148
2014-03-31	1093472
2014-06-30	1124579
2014-09-30	1156049
2014-12-31	1155073
2015-03-31	1065184
2015-06-30	1035199
2015-09-30	1037327
2015-12-31	1047093
2016-03-31	1023992
2016-06-30	1015747
2016-09-30	978951
2016-12-31	930045
2017-03-31	923025
2017-06-30	985052
2017-09-30	1055803
2017-12-31	1140789
2018-03-31	1180276
2018-06-30	1029290
2018-09-30	965898
2018-12-31	1151658
2019-03-31	1105254
2019-06-30	1075498
2019-09-30	1071028
2019-12-31	1173570
2020-03-31	1418050
2020-06-30	1241977
2020-09-30	1250256
2020-12-31	1356168
2021-03-31	1333894
2021-06-30	1341507
2021-09-30	1399489
2021-12-31	1481246
2022-03-31	1503023
2022-06-30	1505157
2022-09-30	1521806
2022-12-31	1432678
2023-03-31	1481685
2023-06-30	1453619
2023-09-30	1532137